Greg Biffle (3rd from R), driver of the #16 3M Ford Fusion, watches a Fort Worth Police Department K-9 exercise during an exhibition at Texas Motor Speedway on March 20, 2013 in Fort Worth, Texas.
{"Image ImageDescription": "FORT WORTH, TX - MARCH 20:  Greg Biffle (3rd from R), driver of the #16 3M Ford Fusion, watches a Fort Worth Police Department K-9 exercise during an exhibition at Texas Motor Speedway on March 20, 2013 in Fort Worth, Texas.  (Photo by Tom Pennington/Getty Images for Texas Motor Speedway)", "Image Copyright": "2013 Getty Images"}